Abstract

The Deecan Trap basaltic rocks form the technical basement of the Cambay Basin, India. The basaltic basement is proven hydrocarbon producer in some of the fields like Padra and Gamij located on the eastern margin of the Cambay basin. An earlier study in relation to Padra field showed moderately weathered basalt as the reservoir rock, and developed a suitable method for identification and evaluation of oil bearing zones in the basement section using well logs. The present study applies the same method to the analysis of basaltic basement in the Gamij field. After a brief account of the nature and characteristics of the basaltic reservoir and the methodology used for its evaluation, the results of the analysis of three wells are presented and discussed, and they are found to be in agreement with geological and production data. It further augments the reliability of the method for the analysis of basaltic section in other fields.